Fatigue testing machine for shield tail sealing brush

Abstract

The utility model provides a shield tail sealing brush fatigue testing machine, which relates to the technical field of product detection equipment and comprises a vertical plate, a gear ring, a driving mechanism, a telescopic tunnel simulation plate, a shield tail sealing brush fixing seat and a shield tail sealing brush. According to the device, a vertical plate is adopted as a support, all devices are installed, a gear ring rotating on the vertical plate is driven by a driving mechanism to rotate, the gear ring drives a shield tail sealing brush fixing base and a shield tail sealing brush on the gear ring to rotate, and the telescopic tunnel simulation plate adjusts the pressure between the telescopic tunnel simulation plate and the movable end of the shield tail sealing brush in a telescopic mode. After the shield tail sealing brush rotates, the shield tail sealing brush is in rotational friction with the movable end of the telescopic tunnel simulation plate, rotational friction borne by the shield tail sealing brush in actual use is simulated until the shield tail sealing brush is broken, and the service life of the shield tail brush is detected more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of product testing equipment, in particular to a fatigue testing machine for shield tail seal brushes. Background Technique

[0002] With the rapid development of rail transit, the application of shield machines required for rail transit construction is becoming more and more extensive, and the demand for matching brushes is also increasing rapidly. The service life of the shield tail brush has also attracted much attention from customers.

[0003] The existing fatigue testing machines for shield tail seal brushes usually apply extrusion and linear reciprocating friction to the shield tail brush, which has a slight difference from the rotational friction received by the shield tail seal brush during actual use, resulting in a reduction in the accuracy of the test results. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fatigue testing machine for shield tail seal brushes, which has the advantage of simulating the rotational friction received by the shield tail seal brush during actual use, and solves the technical problem that the existing fatigue testing machine for shield tail seal brushes applies extrusion and linear reciprocating friction to the shield tail brush, which has a slight difference from the rotational friction received by the shield tail seal brush during actual use.

[0005] The utility model provides a fatigue testing machine for shield tail seal brushes, including:

[0006] Vertical plate;

[0007] Gear ring, the rear end of which is rotatably connected to the vertical plate;

[0008] Driving mechanism, which is fixedly assembled on the vertical plate, and the output end of the driving mechanism is engaged with the gear ring;

[0009] Retractable tunnel simulation plate, which is fixedly assembled on the vertical plate, and the retractable tunnel simulation plate is located in the middle of the gear ring;

[0010] Shield tail seal brush fixing seat, which is fixedly assembled on the inner ring surface of the gear ring;

[0011] The shield tail seal brush is fixedly assembled on the shield tail seal brush fixing seat, and the end of the shield tail seal brush abuts against the movable end of the retractable tunnel simulation plate.

[0012] As a further optimized solution, in order to control the telescopic amount of the main body of the tunnel simulation plate, and further control the pressure between the main body of the tunnel simulation plate and the shield tail seal brush, the retractable tunnel simulation plate includes:

[0013] Vertical plate, a fixed connection structure is assembled between the rear edge of the side wall of the vertical plate and the vertical plate;

[0014] Electric push rod, the fixed end of which is vertically and fixedly assembled on the outer wall of the vertical plate;

[0015] The telescopic end of the electric push rod is fixedly assembled with the main body of the tunnel simulation board;

[0016] The outer wall of the main body of the tunnel simulation board is in contact with the end of the shield tail seal brush on the shield tail seal brush fixing seat.

[0017] As a further optimization scheme, in order to facilitate the installation and disassembly of the shield tail seal brush, the shield tail seal brush fixing seat includes:

[0018] The mounting plate is fixedly assembled on the inner ring surface of the gear ring;

[0019] The first fixing bolt, and the shield tail seal brush is fixedly connected to the mounting plate through the first fixing bolt.

[0020] As a further optimization scheme, in order to set up two experimental groups for mutual comparison, the number of electric push rods and the main body of the tunnel simulation board in the telescopic tunnel simulation board is two;

[0021] The main body of the tunnel simulation board is fixedly assembled on the telescopic end of the electric push rod on the same side;

[0022] The number of the shield tail seal brush fixing seats and the shield tail seal brushes thereon is two;

[0023] The outer side of the main body of the tunnel simulation board is in contact with the end of the shield tail seal brush on the shield tail seal brush fixing seat on the same side.

[0024] As a further optimization scheme, in order to facilitate the installation and disassembly of the telescopic tunnel simulation board and the vertical plate, the fixed connection structure includes:

[0025] The connecting ear plate is fixedly connected to the rear edge of the side wall of the vertical plate;

[0026] The second fixing bolt, and the connecting ear plate is fixedly connected to the vertical plate through the second fixing bolt.

[0027] As a further optimization scheme, in order to realize the rotation of the gear ring on the vertical plate, a rotating clamping structure is assembled between the rear end of the gear ring and the vertical plate, and it includes:

[0028] The annular sliding groove is coaxially opened on the rear edge of the gear ring;

[0029] One end of the connecting rod is uniformly slidably clamped in the annular sliding groove, and the other end of the connecting rod is fixedly connected to the vertical plate.

[0030] As a further optimization scheme, in order to drive the gear ring to drive the shield tail seal brush fixing seat and the shield tail seal brush thereon to rotate, the driving mechanism includes:

[0031] A drive motor is fixedly assembled on a vertical plate, and the output end of the drive motor penetrates through the vertical plate;

[0032] A gear is fixedly connected to the output end of the drive motor;

[0033] The gear meshes with a gear ring.

[0034] As a further optimization scheme, in order to control the rotation speed of the drive motor, it further includes:

[0035] An inverter, which is electrically connected to the drive motor.

[0036] As a further optimization scheme, in order to increase the support area and ensure the stability of the device placement, a bottom plate is fixedly assembled at the lower end of the vertical plate.

[0037] As a further optimization scheme, in order to be fixedly connected to the ground or a tabletop by bolts, mounting through holes are uniformly formed on the bottom plate.

[0038] The present utility model provides a fatigue testing machine for shield tail sealing brushes through improvement. Compared with the prior art, it has the following improvements and advantages:

[0039] The device uses a vertical plate as a bracket to install various components. The gear ring rotating on the vertical plate is driven by a driving mechanism. The gear ring drives the shield tail sealing brush fixing seat and the shield tail sealing brush thereon to rotate. The telescopic tunnel simulation plate adjusts the pressure between the telescopic adjustment and the movable end of the shield tail sealing brush. After the shield tail sealing brush rotates, it rotates and rubs against the movable end of the telescopic tunnel simulation plate, simulating the rotational friction received by the shield tail sealing brush during actual use. The friction continues until the shield tail sealing brush breaks, more accurately detecting the service life of the shield tail brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 It is a schematic structural diagram of the present utility model;

[0042] Figure 2 It is a schematic structural diagram of the telescopic tunnel simulation plate of the present utility model;

[0043] Figure 3 For the present utility model Figure 1 The enlarged structural schematic diagram at position A in;

[0044] Figure 4 It is a schematic structural diagram of the rotation and clamping structure of the present utility model;

[0045] Figure 5 It is a schematic structural diagram of the driving mechanism of the present utility model.

[0046] Explanation of reference numerals:

[0047] 1 - vertical plate, 2 - gear ring, 3 - driving mechanism, 31 - driving motor, 32 - gear, 4 - telescopic tunnel simulation plate, 41 - vertical plate, 42 - electric push rod, 43 - tunnel simulation plate body, 44 - fixed connection structure, 441 - connecting ear plate, 442 - second fixing bolt, 5 - shield tail seal brush fixing seat, 51 - mounting plate, 52 - first fixing bolt, 6 - bottom plate, 7 - mounting through hole, 8 - frequency converter, 9 - rotation and clamping structure, 91 - annular chute, 92 - connecting rod. Specific embodiments

[0048] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0049] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0050] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined. In addition, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] Please refer to Figures 1-5 , the present utility model provides a technical solution: a fatigue testing machine for a tail seal brush, comprising:

[0052] A vertical plate 1;

[0053] A gear ring 2, the rear end of which is rotatably connected to the vertical plate 1;

[0054] A driving mechanism 3, which is fixedly assembled on the vertical plate 1, the output end of the driving mechanism 3 meshes with the gear ring 2, and the driving mechanism 3 drives the gear ring 2 to rotate on the vertical plate 1;

[0055] A telescopic tunnel simulation plate 4, which is fixedly assembled on the vertical plate 1, and the telescopic tunnel simulation plate 4 is located in the middle of the gear ring 2;

[0056] A tail seal brush fixing seat 5, which is fixedly assembled on the inner ring surface of the gear ring 2, and the rotation of the gear ring 2 drives the tail seal brush fixing seat 5 and the tail seal brush thereon to rotate accordingly;

[0057] A tail seal brush is fixedly assembled on the tail seal brush fixing seat 5, and the end of the tail seal brush abuts against the movable end of the telescopic tunnel simulation plate 4. After the tail seal brush rotates, it performs rotational friction with the movable end of the telescopic tunnel simulation plate 4, simulating the rotational friction received by the tail seal brush during actual use, and the friction continues until the tail seal brush breaks, more accurately detecting the service life of the tail brush.

[0058] In some embodiments, in order to control the telescopic amount of the tunnel simulation plate main body 43, and further control the pressure between the tunnel simulation plate main body 43 and the tail seal brush, the telescopic tunnel simulation plate 4 comprises:

[0059] A vertical plate 41, and a fixed connection structure 44 is assembled at the position between the rear edge of the side wall thereof and the vertical plate 1;

[0060] The electric push rod 42, whose fixed end is vertically and fixedly assembled on the outer wall of the vertical plate 41;

[0061] The telescopic end of the electric push rod 42 is fixedly assembled with the tunnel simulation plate body 43. The electric push rod 42 is connected to an external power supply and an external controller, and the telescopic amount of the electric push rod 42 is controlled by the external controller, thereby controlling the pressure between the tunnel simulation plate body 43 and the shield tail seal brush;

[0062] The outer wall of the tunnel simulation plate body 43 is in contact with the end of the shield tail seal brush on the shield tail seal brush fixing seat 5.

[0063] In some embodiments, for the convenience of installation and disassembly of the shield tail seal brush, the shield tail seal brush fixing seat 5 includes:

[0064] The mounting plate 51, which is fixedly assembled on the inner ring surface of the gear ring 2;

[0065] The first fixing bolt 52, and the shield tail seal brush is fixedly connected to the mounting plate 51 through the first fixing bolt 52. After removing the first fixing bolt 52, the shield tail seal brush can be disassembled, and the reverse operation can be performed during installation.

[0066] In some embodiments, in order to symmetrically arrange two experimental groups for mutual comparison and further ensure the accuracy of the test results, there are two electric push rods 42 and two tunnel simulation plate bodies 43 in the telescopic tunnel simulation plate 4;

[0067] The tunnel simulation plate body 43 is fixedly assembled on the telescopic end of the electric push rod 42 on the same side;

[0068] There are two shield tail seal brush fixing seats 5 and the shield tail seal brushes thereon;

[0069] The outer side of the tunnel simulation plate body 43 is in contact with the end of the shield tail seal brush on the shield tail seal brush fixing seat 5 on the same side.

[0070] In some embodiments, for the convenience of installation and disassembly of the telescopic tunnel simulation plate 4 and the vertical plate 1, the fixed connection structure 44 includes:

[0071] The connecting ear plate 441, which is fixedly connected to the rear edge of the side wall of the vertical plate 41;

[0072] The second fixing bolt 442, and the connecting ear plate 441 is fixedly connected to the vertical plate 1 through the second fixing bolt 442. After removing the second fixing bolt 44, the telescopic tunnel simulation plate 4 can be disassembled, and the reverse operation can be performed during installation.

[0073] In some embodiments, in order to enable the gear ring 2 to rotate on the vertical plate 1, a rotating clamping structure 9 is assembled between the rear end of the gear ring 2 and the vertical plate 1, and it includes:

[0074] An annular chute 91 is coaxially provided on the rear edge of the gear ring 2;

[0075] One end of a connecting rod 92 is slidably and detachably connected in the annular chute 91 in a uniform manner. The other end of the connecting rod 92 is fixedly connected to the vertical plate 1, and the gear ring 2 is rotatably and detachably connected to the vertical plate 1.

[0076] In some embodiments, in order to drive the gear ring 2 to drive the shield tail seal brush fixing seat 5 and the shield tail seal brush thereon to rotate, the driving mechanism 3 includes:

[0077] A driving motor 31 is fixedly assembled on the vertical plate 1, and the output end of the driving motor 31 penetrates through the vertical plate 1;

[0078] A gear 32 is fixedly connected to the output end of the driving motor 31;

[0079] The gear 32 meshes with the gear ring 2.

[0080] In some embodiments, in order to control the rotation speed of the driving motor 31, it further includes:

[0081] An inverter 8 is electrically connected to the driving motor 31. The driving motor 31 is specifically a reduction motor, and is adjusted through the inverter 8 to achieve speed regulation in a certain rotation speed range to adapt to different test requirements.

[0082] In some embodiments, in order to increase the support area and ensure the stability of the device placement, a bottom plate 6 is fixedly assembled at the lower end of the vertical plate 1.

[0083] In some embodiments, in order to be fixedly connected to the ground or the tabletop by bolts, mounting through holes 7 are uniformly provided on the bottom plate 6.

[0084] Working principle:

[0085] The driving mechanism 3 is fixedly assembled on the vertical plate 1. The output end of the driving mechanism 3 meshes with the gear ring 2. The driving mechanism 3 drives the gear ring 2 to rotate on the vertical plate 1. The rotation of the gear ring 2 drives the shield tail seal brush fixing seat 5 and the shield tail seal brush thereon to rotate accordingly;

[0086] The end of the shield tail seal brush abuts against the movable end of the telescopic tunnel simulation plate 4. After the shield tail seal brush rotates, it rotates and rubs against the movable end of the telescopic tunnel simulation plate 4 to simulate the rotational friction received by the shield tail seal brush during actual use. The friction continues until the shield tail seal brush breaks, and more accurately detects the service life of the shield tail brush.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fatigue testing machine for a tail seal brush, characterized in that Comprising: Vertical plate (1); Toothed ring (2), whose rear end is rotatably connected to the vertical plate (1); Driving mechanism (3), which is fixedly assembled on the vertical plate (1), and the output end of the driving mechanism (3) meshes with the toothed ring (2); Retractable tunnel simulation plate (4), which is fixedly assembled on the vertical plate (1), and the retractable tunnel simulation plate (4) is located in the middle of the toothed ring (2); Tail seal brush fixing seat (5), which is fixedly assembled on the inner ring surface of the toothed ring (2); A tail seal brush is fixedly assembled on the tail seal brush fixing seat (5), and the end of the tail seal brush abuts against the movable end of the retractable tunnel simulation plate (4).

2. The fatigue testing machine for shield tail sealing brush according to claim 1, characterized in that, The retractable tunnel simulation plate (4) includes: Vertical plate (41), and a fixed connection structure (44) is assembled at the position between the rear edge of its side wall and the vertical plate (1); Electric push rod (42), whose fixed end is vertically and fixedly assembled on the outer wall of the vertical plate (41); The telescopic end of the electric push rod (42) is fixedly assembled with a tunnel simulation plate main body (43); The outer wall of the tunnel simulation plate main body (43) fits with the end of the tail seal brush on the tail seal brush fixing seat (5).

3. The fatigue testing machine for the shield tail seal brush according to claim 1, characterized in that The tail seal brush fixing seat (5) includes: Mounting plate (51), which is fixedly assembled on the inner ring surface of the toothed ring (2); First fixing bolt (52), and the tail seal brush is fixedly connected to the mounting plate (51) through the first fixing bolt (52).

4. A tail seal brush fatigue testing machine according to claim 2, characterized in that, The number of electric push rods (42) and tunnel simulation plate main bodies (43) in the retractable tunnel simulation plate (4) is two; The tunnel simulation plate main body (43) is fixedly assembled on the telescopic end of the electric push rod (42) on the same side; The number of the tail seal brush fixing seats (5) and the tail seal brushes thereon is two; The outer side of the tunnel simulation plate main body (43) fits with the end of the tail seal brush on the tail seal brush fixing seat (5) on the same side.

5. The fatigue testing machine for shield tail sealing brush according to claim 2, characterized in that, The fixed connection structure (44) includes: Connecting ear plate (441), which is fixedly connected to the rear edge of the side wall of the vertical plate (41); Second fixing bolt (442), and the connecting ear plate (441) is fixedly connected to the vertical plate (1) through the second fixing bolt (442).

6. The fatigue testing machine for shield tail seal brush according to claim 1, wherein A rotating clamping structure (9) is assembled at the position between the rear end of the toothed ring (2) and the vertical plate (1), and it includes: Annular chute (91), which is coaxially opened on the rear edge of the toothed ring (2); One end of a connecting rod (92) is evenly and slidably clamped in the annular chute (91), and the other end of the connecting rod (92) is fixedly connected to the vertical plate (1).

7. A tail seal brush fatigue testing machine according to claim 1, characterized in that The driving mechanism (3) includes: Driving motor (31), which is fixedly assembled on the vertical plate (1), and the output end of the driving motor (31) penetrates through the vertical plate (1); Gear (32), which is fixedly connected to the output end of the driving motor (31); The gear (32) meshes with the toothed ring (2).

8. A tail seal brush fatigue testing machine according to claim 7, characterized in that, Also included is: Frequency converter (8), which is electrically connected to the driving motor (31).

9. A shield tail seal brush fatigue testing machine according to claim 1, characterized in that, The lower end of the vertical plate (1) is fixedly assembled with a bottom plate (6).

10. A tail seal brush fatigue testing machine according to claim 9, characterized in that, Mounting through holes (7) are evenly opened on the bottom plate (6).

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